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feat(p0-r3): implement pre-extracted template configurations system

Browse Source 
Major Features:
- Pre-extracted 197 node configurations from 2,646 workflow templates
- Removed get_node_for_task tool (28% failure rate, 31 tasks)
- Enhanced search_nodes and get_node_essentials with includeExamples parameter
- 30-60x faster queries (<1ms vs 30-60ms)

Database Schema:
- New table: template_node_configs with optimized indexes
- New view: ranked_node_configs for top 5 configs per node
- Migration script: add-template-node-configs.sql

Template Processing:
- extractNodeConfigs: Extract configs from workflow templates
- detectExpressions: Identify n8n expressions ({{...}}, $json, $node)
- insertAndRankConfigs: Rank by popularity, keep top 10 per node

Tool Enhancements:
- search_nodes: Added includeExamples parameter (top 2 configs)
- get_node_essentials: Added includeExamples parameter (top 3 configs)

CLI Features:
- --extract-only: Extract configs without fetching new templates
- Automatic table creation if missing

Breaking Changes:
- Removed get_node_for_task tool
- Use search_nodes({includeExamples: true}) or get_node_essentials({includeExamples: true}) instead

Performance:
- Query time: <1ms for pre-extracted configs
- 85x more examples (2,646 vs 31)
- Database size increase: ~197 configs stored

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
czlonkowski
2025-10-02 20:24:09 +02:00
parent 99518f71cf
commit 997cc93a0a
15 changed files with 568 additions and 200 deletions
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147
src/mcp/server.ts
View File

@@ -713,7 +713,7 @@ export class N8NDocumentationMCPServer {
this.validateToolParams(name, args, ['query']);
// Convert limit to number if provided, otherwise use default
const limit = args.limit !== undefined ? Number(args.limit) || 20 : 20;
return this.searchNodes(args.query, limit, { mode: args.mode });
return this.searchNodes(args.query, limit, { mode: args.mode, includeExamples: args.includeExamples });
case 'list_ai_tools':
// No required parameters
return this.listAITools();
@@ -725,14 +725,11 @@ export class N8NDocumentationMCPServer {
return this.getDatabaseStatistics();
case 'get_node_essentials':
this.validateToolParams(name, args, ['nodeType']);
return this.getNodeEssentials(args.nodeType);
return this.getNodeEssentials(args.nodeType, args.includeExamples);
case 'search_node_properties':
this.validateToolParams(name, args, ['nodeType', 'query']);
const maxResults = args.maxResults !== undefined ? Number(args.maxResults) || 20 : 20;
return this.searchNodeProperties(args.nodeType, args.query, maxResults);
case 'get_node_for_task':
this.validateToolParams(name, args, ['task']);
return this.getNodeForTask(args.task);
case 'list_tasks':
// No required parameters
return this.listTasks(args.category);
@@ -1030,11 +1027,12 @@ export class N8NDocumentationMCPServer {
}
private async searchNodes(
query: string,
query: string,
limit: number = 20,
options?: {
options?: {
mode?: 'OR' | 'AND' | 'FUZZY';
includeSource?: boolean;
includeExamples?: boolean;
}
): Promise<any> {
await this.ensureInitialized();
@@ -1060,14 +1058,19 @@ export class N8NDocumentationMCPServer {
if (ftsExists) {
// Use FTS5 search with normalized query
return this.searchNodesFTS(normalizedQuery, limit, searchMode);
return this.searchNodesFTS(normalizedQuery, limit, searchMode, options);
} else {
// Fallback to LIKE search with normalized query
return this.searchNodesLIKE(normalizedQuery, limit);
}
}
private async searchNodesFTS(query: string, limit: number, mode: 'OR' | 'AND' | 'FUZZY'): Promise<any> {
private async searchNodesFTS(
query: string,
limit: number,
mode: 'OR' | 'AND' | 'FUZZY',
options?: { includeSource?: boolean; includeExamples?: boolean; }
): Promise<any> {
if (!this.db) throw new Error('Database not initialized');
// Clean and prepare the query
@@ -1168,12 +1171,40 @@ export class N8NDocumentationMCPServer {
})),
totalCount: scoredNodes.length
};
// Only include mode if it's not the default
if (mode !== 'OR') {
result.mode = mode;
}
// Add examples if requested
if (options && options.includeExamples) {
for (const nodeResult of result.results) {
try {
const examples = this.db!.prepare(`
SELECT
parameters_json,
template_name,
template_views
FROM template_node_configs
WHERE node_type = ?
ORDER BY rank
LIMIT 2
`).all(nodeResult.nodeType) as any[];
if (examples.length > 0) {
nodeResult.examples = examples.map((ex: any) => ({
configuration: JSON.parse(ex.parameters_json),
template: ex.template_name,
views: ex.template_views
}));
}
} catch (error: any) {
logger.warn(`Failed to fetch examples for ${nodeResult.nodeType}:`, error.message);
}
}
}
// Track search query telemetry
telemetry.trackSearchQuery(query, scoredNodes.length, mode ?? 'OR');
@@ -1733,12 +1764,12 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
};
}
private async getNodeEssentials(nodeType: string): Promise<any> {
private async getNodeEssentials(nodeType: string, includeExamples?: boolean): Promise<any> {
await this.ensureInitialized();
if (!this.repository) throw new Error('Repository not initialized');
// Check cache first
const cacheKey = `essentials:${nodeType}`;
// Check cache first (cache key includes includeExamples)
const cacheKey = `essentials:${nodeType}:${includeExamples ? 'withExamples' : 'basic'}`;
const cached = this.cache.get(cacheKey);
if (cached) return cached;
@@ -1805,10 +1836,55 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
developmentStyle: node.developmentStyle ?? 'programmatic'
}
};
// Add examples from templates if requested
if (includeExamples) {
try {
const examples = this.db!.prepare(`
SELECT
parameters_json,
template_name,
template_views,
complexity,
use_cases,
has_credentials,
has_expressions
FROM template_node_configs
WHERE node_type = ?
ORDER BY rank
LIMIT 3
`).all(node.nodeType) as any[];
if (examples.length > 0) {
(result as any).examples = examples.map((ex: any) => ({
configuration: JSON.parse(ex.parameters_json),
source: {
template: ex.template_name,
views: ex.template_views,
complexity: ex.complexity
},
useCases: ex.use_cases ? JSON.parse(ex.use_cases).slice(0, 2) : [],
metadata: {
hasCredentials: ex.has_credentials === 1,
hasExpressions: ex.has_expressions === 1
}
}));
(result as any).examplesCount = examples.length;
} else {
(result as any).examples = [];
(result as any).examplesCount = 0;
}
} catch (error: any) {
logger.warn(`Failed to fetch examples for ${nodeType}:`, error.message);
(result as any).examples = [];
(result as any).examplesCount = 0;
}
}
// Cache for 1 hour
this.cache.set(cacheKey, result, 3600);
return result;
}
@@ -1866,43 +1942,6 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
};
}
private async getNodeForTask(task: string): Promise<any> {
const template = TaskTemplates.getTaskTemplate(task);
if (!template) {
// Try to find similar tasks
const similar = TaskTemplates.searchTasks(task);
throw new Error(
`Unknown task: ${task}. ` +
(similar.length > 0
? `Did you mean: ${similar.slice(0, 3).join(', ')}?`
: `Use 'list_tasks' to see available tasks.`)
);
}
return {
task: template.task,
description: template.description,
nodeType: template.nodeType,
configuration: template.configuration,
userMustProvide: template.userMustProvide,
optionalEnhancements: template.optionalEnhancements || [],
notes: template.notes || [],
example: {
node: {
type: template.nodeType,
parameters: template.configuration
},
userInputsNeeded: template.userMustProvide.map(p => ({
property: p.property,
currentValue: this.getPropertyValue(template.configuration, p.property),
description: p.description,
example: p.example
}))
}
};
}
private getPropertyValue(config: any, path: string): any {
const parts = path.split('.');
let value = config;